US 12,002,900 B2
Method and device for fixed connection of solar cell string, and press assembly
Shigeng Chen, Suzhou (CN); Yonggang Wu, Suzhou (CN); Qifei Ge, Suzhou (CN); Yong Yang, Suzhou (CN); and Biao Yin, Suzhou (CN)
Assigned to SUZHOU XIAONIU AUTOMATION EQUIPMENT CO., LTD., Suzhou (CN)
Filed by SUZHOU XIAONIU AUTOMATION EQUIPMENT CO., LTD., Suzhou (CN)
Filed on May 15, 2023, as Appl. No. 18/317,217.
Claims priority of application No. 202211224117.9 (CN), filed on Oct. 9, 2022.
Prior Publication US 2023/0282762 A1, Sep. 7, 2023
Int. Cl. B23K 1/00 (2006.01); H01L 31/05 (2014.01); H01L 31/18 (2006.01)
CPC H01L 31/188 (2013.01) [B23K 1/0008 (2013.01); H01L 31/0504 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for a fixed connection of a solar cell string, comprising:
laying the solar cell string; and
performing a melting-solidification operation;
wherein the laying of the solar cell string comprises:
stacking a back film, a first solder ribbon, a solar cell, a second solder ribbon and a front film to form a solar cell unit; wherein the first solder ribbon comprise a first solder ribbon section and a second solder ribbon section connected with each other; the second solder ribbon comprises a third solder ribbon section and a fourth solder ribbon section connected with each other;
stacking a back film, a first solder ribbon, a solar cell, a second solder ribbon and a front film to form a solar cell unit; wherein the first solder ribbon comprise a first solder ribbon section and a second solder ribbon section connected with each other; the second solder ribbon comprises a third solder ribbon section and a fourth solder ribbon section connected with each other;
wherein the stacking comprises:
laying the second solder ribbon section on the back film;
laying the solar cell on the second solder ribbon section;
laying the third solder ribbon section on the solar cell; and
laying the front film on the third solder ribbon section to form the solar cell unit;
connecting N solar cell units in series to form the solar cell string, wherein N is an integer equal to or greater than 2; and
placing a first press on the front film to form a laying unit, and placing a second press on the front film of the laying unit, wherein the first press presses against at least a middle portion of the front film; and the second press presses against at least a head portion of the front film; and the head portion is an end of the front film covering the third solder section; and
the melting-solidification operation is performed through steps of:
after the first press is placed on the front film, subjecting the laying unit to melting and solidification; placing the second press on the laying unit; transferring the laying unit with the second press to a melting-solidification zone for melting and solidification to complete fixed connection of the solar cell string; and removing the first press and the second press from the front film of the solar cell string; or
after the first press and the second press are both placed on the front film of the laying unit; transferring the laying unit with the second press to the melting-solidification zone for melting and solidification to complete fixed connection of the solar cell string; and removing the first press and the second press from the front film of the solar cell string.